Head-cutting machine.



No. 678,022.l Patented my 9, 190|.

w. E. mcHoLs.

HEAD CUTTING, MACHINE.

(Application led Aug. 16, 1900.) (N0 Model.)

4 Sheets-Sheet l.

.lilith-125555: ',-Iderrblmy QW/L@ miami/mali Patented July 9, 190|.

No. l678,022.

W. E. NICHOLS. HEAD CUTTING MACHINE.

(Applicntion Bled Aug. 16, 1900.)

4 lShuets--Shmat 2.

(No Model.)

@n www ma mums PErzRs cu.. Puovaurnm WASHINGTON. u. n:

Patented luly 9, |90l. W. E. NICHOLS.

HEAD CUTTING MACHINE.

(No Model.)

(Application led Aug.. l?, 1900.)v

4 Sheets-Sheet 4.V

l Wi' Imll UNITED STATES' vPATENT OFFICE.`

WILLIAM F. NICHOLS, oF WINCHFNDON, MASSACHUSETTS.

HEAD-CUTHNG MACHINE.

SPECIFICATION forming part of Letters'Patent No. 678,022, dated July 9,1901.

Applioationled August'l. 1900.` Serial No. 27,08%. (No model.) v

To all whom 2'? weary concern: Be itknown that I, WILLIAM E. NICHOLS,

j a citizenV of the United States, residing at Winchendon, in the countyof Worcester and State of Massachusetts, `have invented a new and usefulImprovement inHead- Cuttingv Machines, of which the following is aspecification, reference being had to the accompanying drawings, inwhich- Figure 1 is a top plan view of my new headcutting machine. Fig. 2is a side elevation of the same. Fig. 3 is a sectional view on the lineA A, Fig. 1. Fig. 4 is a` sectional view on the line B B,'Fig. l; .andAFigs. 5, 6, 7, 8, 9, 10, and 11 show details of the constructionhereinafter referred to and described.

My present invention is an improvement on the head-cutting machineinvented by me and described in my pending application, Serial No.737,618, filed November 20, 1899.

The object of my invention is to simplify the construction, lessen thenumber of parts, and make the action of the machine more positive.

One feature of my invention is the mechanism employed for moving thecutters into and out of Contact with the Stock.

A second feature of my invention is the mechanism employed for raisingthe lower clamp to free the carrier-frame from the bar' rel-head and forrotating the clamp.

A third feature of my invention is the mechanism employed for throwingthe Inovable arm of the carrier-frame out of the way of the lowercutter.

A fourth feature-of `my invention is the mechanism employed to regulatethe coperation of the feeding mechanism, the automatic clampingmechanism, and the cutting. mechanism.

OtherV features of. my inventionare the mechanisms employed foradjusting the travel of the carrier-frame to bring the center of theAbarrel-head in theaxis of the rotary clamps, for adjusting the positionof the crank-arm on the crank-shaft, and; for adjusting the depth of cutmade bythe cutters.

My invention consists in the combinations hereinafter describedandclaimed.

In the drawings illustrating the principle of my invention and thebestmode now known to me ofl applying that principle, ais the suplVporting-frame of the machine, in which is journaled the main shaft b.Fast upon this shaft are the pulleys c, cl, e, and f, and loose on saidshaft b is the pulley g. (See Fig. 1.) Pulleyc receives the power fromthe driving- -belt and transmits it through shaft b to the pulleys d ande, which are belt-connected with pulleys hand t', fast on the shafts jand la 0f the cutters Z and m,.respectively. Journaled in the rear partof the frame is a shaft n, mounted fast upon which isa pulley 16,belt-connected with pulley f. Fast upon the inner end of this shaft n isa bevel-piniono, (see Fig. 4,) which meshes with a bevel-gear 1o, fastupon a rotary sleeve q. The motion of the rotation communicated to thissleeveqis transmitted to a Shaft t by means of a pinion r, fast uponsleeve q and interme'shing with a spurgear s, fast upon sleeve f. Uponthe upper end of shaftt is mounted a crank-arm u, (see Figs. 2, 5, and6,) to which is pivoted at one end a link o, the other end of which isslotted at w. (See Fig. 7.) Fast upon the same shaft t is an eccentricwhich works in an eccentric-strap y, provided with aboss c. (See Fig.3.) This boss z is slotted at 1 to receive a bolt 2, which connects thestrap y to the rack 3. A link 4 is pivoted at one end to the rack 3 andat theother end to the slide 5, formed with a curved slot 6. The rack 3en gages a pinion 7,fast upon the shaf t 8. Mounted on this shaft 8, oneon each Side of the machine, (see Fig. 1,) are the'pinions 9 and 10,which mesh, respectively, with the .racks 1l and 14. The rack 11 ispivoted--to the slide 12, formed with the curved slot 13, (see Fig. 2,)andthe rack 14 is pivoted to a slide 15, formed with a curved slot thereverse of slot 1 3 in slide 12. A bolt 17 engages the slot 'w -in thelink o, and thereby connects the link c to the carrier-frame extension18. (See Fig.7.)

19, by means of which the initial position of the bolt 17 in the slot wmay be controlled. The carrier-frame is made up of two partsa stationarymember 20 and a movable arm 21, pivoted on the'stationary member 2O at22. (See Fig. 1.) The stationary member 20 is bolted to thecarrier-frame extension 18, as shown in Fig. 7. Y

Pivoted on the bed of the machine, at one side thereof, is a lever 23,(see-Fig. 1,) forked The bolt 17 is engaged by the adj usting-screw iIOO at its free end to receive a lug 24 upon the arm 21 of thecarrier-frame. Screws 25 25 pass through one of the fingers 26 of thisforked lever 23 and are encircled by spiral springs 27 27, to which issecured the strap 28. A link 29 connects the lever 23 to a lever 30,pivoted Y in the frame of the machine. (See Fig. 8.)

The cutter m and its shaft 7c are adj ustably mounted in avertically-slidable carriage 31, (see Figs. 4 and 2,) slotted to permitthe passage of the bolt 32. 32 travels in the slot 13 in slide 12.zontal reciprocations of the slide 12 thus causes the verticalreciprocation of the carriage 31 to move the cutter m into and out ofcontact with the stock. A capstan-screw 34 engages an ear upon the bolt32 and serves to adjust the height of the cutter m above the bolt 32.The slot in the carriage 31 permits this relative movement. A bracket 35is bolted to the carriage 31, and mounted in this bracket 35 is a pin36, which engages in aslot 37 in thelever 30. (See Figs. 8, 4, and 2.)An adj usting-screw 38 serves to regulate the height of the pin 36 inthe slot 37 and thereby the throw ofthe lever 30.

The cutter Z and its shaft j are adjustably mounted in a slidablecarriage 39, similar to the mounting of the cutter m and its shaft 7c.(See Fig. 4.) This carriage 39 is controlled by the slotted slide 15through the bolt 41 and its boss 40. Vithin the slot 6 in the slide 5(see Fig. 3) travels a lug 42, fast upon a carriage 43, to the lower endof which carriage is pivotally secured one end of a lever 44. (See Figs.9 and 10, Fig. 10 being a sectional View on line D D of Fig. 9,) Themiddle portion 45 of this lever 44 is ring-shaped and carries, free torevolve within it, a disk 46, which is formed with apertures 47, havinginclined walls. Fast upon the lower end of the sleeve q is a ring 48, ina socket 49 in which is secured a pin 50, beveled at lower end. Thespring 51 tends to force the pin 50 out of the socket 49. (See Fig. 10.)The disk 46 is fast to the clamp-shaft 52, which rotates intermittentlywith the sleeve q. When the slide 5 reciprocates horizontally, thecarriage 43 reciprocates vertically, thereby raising and lowering thelever 44 with its disk 46 and throwing the disk 46 into and out ofengagement with the pin 50, carried by the revolving ring 48, fast uponsleeve q. Thus the lower clamp is moved up and down and caused to rotateintermittently.

To adjust the cutters in order to vary the diameter of the head, adjusting-screws 53 53 are provided. The cutter-shaftsj and 7c are mountedin slides 54 54, which are carried by the carriages 31 and 39 and aretransversely slidable therein. (See Figs. 2 and 4.) The upper clamp 55(see Fig. 11) is fitted with screw-teeth 56. Bolts 57, which have asliding tit in clamp 55, screw into a disk 58, provided with apertures59, into which the teeth 56 enter. This disk 58 masks the teeth 56 asthe pieces of barrel-head are fed between A boss 33 upon this bolt Thehori-` the clamps and prevents the pieces of barrelhead from beingengaged by the teeth and thrown out of place. Vhen the lower clamp movesup, the disk 58 unmasks the teeth 56 .sufficiently to allow them to bitethe wood and hold it securely while it is rotated during the cuttingoperation. An elastic washer 60 permits the upper clamp to yieldWhenever variations in the thickness of the stock requires it.

The operation of my new machine is as fol lows: Power being applied tothe pulley c, the cutters Z and 'm are set in rotation by thetransmission of the power through the belting connecting the pulleys CZand t and e and t'. (See Fig. 1.) The shaft n is also set in rotation bythe power transmitted through the belting connecting pulleys f and 16.(See Fig. 1.) Through pinion o and gear p the sleeve q is set inrotation, and through pinion fr and gear s the rotation of the sleeve qcauses the rotation ot' the shaft t and the crank-arm u and theeccentric a5, which are fast upon the shaft t. (See Figs. 4 and 2.) Thuswhile the pulley c rotates, the cutters l and m, the sleeve q, and theshaft t are in a state of constant rotation. The rotation of thecrank-arm u drives the carrier-frame 2O 21 toward and from the clamps,and the slot w in the link 'v (see Fig. 7) permits the car rier-frame todwell while the pieces of barrelhead are removed from within the frameby the upward movement of the lower clamp and at the other end of itstravel, while the carrier-frame receives the pieces of barrelhead. (SeeFig. 2.) The rotation of the eccentric 00 reciprocates theeccentric-strap y and through the bolt 2 reciprocates the rack 3,thereby rocking the pinion 7, shaft 8, and pinions 9 and 10, fast onshaft 8. (See Fig. 3.) The reciprocating motion of rack 3 is transmittedthrough link 4 to the slide 5, and the horizontal reciprocating motionof slide 5 causes through slot 6 and lug 42 the carriage 43 to rise andfall, thus raising and lowering the lever 44, disk 46, and clamp-shaft52 and throwing the disk 46 into engagement with the rotating sleeve qthrough pin 50. Should the pin 50 meet the wall of the aperture 47 nearthe top thereof, the bevel-face of the pin 50 and the spring 51 allowthe pin 50 to yield and engage the succeeding aperture. Thereciprocation of the rack 3 rocks the shaft 8 through pinion 7 andthrough pinions 9 and 10 and racks 11 and 14 causes the slides 12 and 15to reciprocate. The reciprocation of slide 15 causes the carriage 39 toslide down and up vertically, and thereby to bring the rotating cutter Zinto and out of contact with the upper side of the rotating stock.Likewise the reciprocation of the slide 12 causes the carriage 31 toslide upand down, and thereby to bring the rotating cutter on `into andout of contact with the lower side of the rotating stock. The upwardmovement of the carriage 31 clears the movable arm 21 of thecarrier-frame out of the way IOO 'of the rising cutter m in this way:The stud 24 is engaged inthe fork of the lever 23 and the pin 36 inlever 30. Through lever 30 and link 29 the upward movement of the pin 36causes the lever 23 to move outwardly, carrying the arm 2l out of theway of the rising cutter m. The upward movement of the carriage 43causes the clamp-shaft 52 to be raised, thereby freeing thecarrier-frame of the pieces of barrel-head, clamping them securely,androtating them to the cutters as the disk 46 on the clamp-shaft 52engages the pin 50 on the rotating sleeve q. The same movement of therack 3 toward the clamp-shaft 52 thus frees the carrier-frame from theinclosed barrelhead and clamps and rotates the stock and brings thecutter into contact with the stock. rIhe cutters must be kept in contactwith the stock during its rotation, and the stock must be rotated untilthe cutting operation is completed. This requires a pause between thereciprocations of the rack 3.4 The requirement is met by providing theboss a' on the eccentric-strap y with a slot l. The rack 3 will not bemoved during the interval required for the bolt 2 to travel the lengthof the slot 1. Similarly the slot win link u permits the carrier-frameto pause while the lower clamp frees it from the inclosed barrel-head.

It is a matter of importance that all the parts should act in unison andthat the pieces of barrelhead should be fed between the clamps so as tobring the center of the barrelhead in the axis of the rotary clamp-shaft52 when that shaft 52 is moved upward to clamp and rotate thebarrel-head. To provide for the adjustment necessitated by thisrequirement, the flange 6l on the upper end of shaft t (see Figs. 5 and6) is provided with a series of bolt-holes 62 at small intervals, whichregister with bolt-holes 63 in the'crank-arm tt. Bolts 64 pass throughthese holes 62 63 and secure the cran k-arm u to the shaft t. To adjustthe angular position of the crank-arm u on the shaft t, the bolts 64 arewithdrawn'and the crank-arm u turned to the desired position. The boltsarethen replaced, the boltholes registering in the new position. Togive4 a ne adjustment, the adjusting-screw 19 is turned, therebyadjusting the bolt 17 in the slot fw in link fu. i

A stop 65 prevents the carrier-frame 20 2l from being carried too far tothe rear by the momentum of the moving parts, and thus insures thecenter of the barrel-head being brought accurately in the axis of therotary clamp-shaft 52. Y

It is evident that the particular construction herein described may bedeparted from without departing from the spirit of my invention. Forcxample,in those parts connected by a lu g on one fitting into a slot inthe other the construction is susceptible of inversion.

I desire to be understood as claiming my invention in the broadestlegally-permissible manner.

What I claim is- 1. In a rotary clamping mechanism the combination of asupporting-frame; a pair of cooperating clamps rotatably mounted in saidframe; the upper one of said clamps being provided with teeth and formedwith boltholes; a plate suspended from said upper clamp by bolts whichare slidable in said boltholes; said plate being apertured for thepassage of said teeth; said bolts; and mechanism for moving the lowerclamp towardthe upper andfor rotating the clamps.

2. In a head-cutting machine, the combination of a clamping mechanism; aslide connected to said clamping mechanism by a lug on one engaging acam-slot in the other, the reciprocations of said slide throwing theclamping mechanism into and out of engagement; means operativelyyconnecting Vsaid.

rocates said slide; and said driving mechan- I slide with a drivingmechanism which recipism connectedto said connecting means by a lug onone engaging an elongated slot in the other, vthereby permitting saidclamping mechanism to rest while the lu g traverses said elongated slot.

` 3. In a head-cuttin g machine, the combination of a clampingmechanism; a slide connected to said clamping mechanism by a lug,

on one engaging a cam-slot in the other; a

cutting mechanism; a slide connected to said cutting mechanism by a lugon one engaging a cam-slot in the other; means operatively connectingsaid slides with a rock-shaft; said rock-shaft; and a driving mechanismWhich oscillates said rock-shaft to clamp the stock and throw thecutting mechanism into con-` tact therewith. Y j

4. In a mechanism for moving an arm of the carrier-frame out of thewayof the cutter, the combination of Va cutter-carriage; mechanism `forreciprocating said cutter-carriage a carrier-frame having a movable arm;

a lever which engages said movable arm; and

mechanism operatively connecting said lever and said cutter-carriage. Y,v

5. In a mechanism for moving an armof the carrier-frame out of theway ofthe cutter,. the combination of a cutter-carriage; mechanism forreciprocating said cutter-car- IOO IIO

riage a lever reci procated by said cutter-carv riage a carrier-framehaving a movable arm;

a lever which `engages a stu-d on the arm of the'carrier-frame; and alink connecting said levers.

6. Ina mechanism for pressing the pieces of Abarrel-head together, thecombination of a lever; a strap on said lever; a carrier-frame,

one arm of which is movable and engages said strap;l and mechanism formoving said carand to engage said arm and said strap.

7. The combination of a driving mechanism; a carrier-frame reciprocatedby said driving mechanism and connected thereto by a ,rier-frame to feedthe pieces of barrel-head n lug on one engaging a slot in the other; co-

operating clamps one of which is raised to IIS clamp the stock and tofree the carrier-frame of the barrel-head at the end of its feedingmovement; mechanism for raising said clamp;

a cutting mechanism; mechanism for throw.

ing said cutting mechanism into contact with the stock when it isclamped; and a screwand-nut adjusting mechanism for adjusting saidcarrier-frame to synchronize the end of its feeding movement and themovement of said clamp and cutting mechanism,

8. In ahead-cutting machine, a mechanism for moving the cutter into andout of contact with the stock comprising a driving mechanism; aneccentric; an eccentric-strap; mechanism operatively connecting saideccentricstrap with coactingslides; said coacting slides, a lug on oneengaging a cam-slot in the other, one of said slides being connectedwith said eccentric-strap, and the othercarrying a cutter; and saidcutter.

9. In a head-cutting machine, a mechanism for moving the cutter intocontact with the stock and holding the cutter in contact with the stock,said mechanism being made up of the combination of a carriage upon whichthe cutter is mounted; mechanism for reciprocating said cutter-carriage;a reciprocating memriage being connected by a lug on one engag-v ing inan elongated slot in the other, thereby permitting the cutter to dwellin contact with the stock while the lug traverses the slot; and saiddriving mechanism.

l0. In a head-cutting machine, a mechanism for moving the cutter intocontact with the stock and holding the cutter in contact with the stockduring the rotation of the stock comprising a driving mechanism; aneccentric; an eccentric-strap formed with an elongated slot; a rackformed with a lug which engages said slot; mechanism connecting saidrack with coacting slides, a lug on one of said slides engaging acam-slot in the other; and a cutter mounted on one of said slides.

l1. In a head-cutting machine, a mechanism for clamping and rotating thestock comprising coacting slides, a lug on one engaging a slot in theother reciprocating mechanism operatively connected with one of saidslides; a lever connected to the other of said slides; a clamp-shaftrotatably mounted in said lever; a rotary mechanism into and out ofengagement with which said clamp-shaft is thrown by the reciprocation ofsaid slides; and coperating clamps.

crepes 12. In ahead-cutting machine, a mechanL ism for clamping androtating the stock comprising a driving mechanism; an intermittently-reciprocating member connected to said driving mechanism by a lug onone en-y gaging an elongated slot in the other; coacting slides, oneconnected with said intermittently-recipro'cating member and the otherwith a lever; said coacting slides being connected bya lug on oneengaging a slot in the other; a clamp-shaft rotatably mounted in saidlever; a rotary mechanism into and out of engagement with which saidclamp-shaft is thrown by the reciprocations of said slides; andcoperating clamps.

13. Ahead-cutting machine made up ofasupporting-frame; a drivingmechanism; a feeding mechanism comprising a carrier-frame; a linkconnected to said carrier-frame byalug on one engaging an elongated slotin the other, thereby permitting said carrier-frame to dwell at the endsof its stroke; and mechanism for reciprocating said link;anintermittently-reciprocating member driven by said driving mechanism;aclamp-shaft carriage; aclampshaft rotatably mounted in said carriage;coacting clamps; mechanism operatively connecting said clamp-shaftcarriage with said intermittently reciprocating member by which saidclamp-shaft is made to clamp and rotate the stock; a rotary member intoand outof engagement with which the clamp-shaft is thrown by thereciprocations of said clampshaft carriage; a cutter-carriage; a cuttermounted on said carriage; and mechanism operatively connecting saidcutter-carriage with said intermittently-reciprocating member by whichsaid cutter is made to contact with the stock when it is clamped androtated.

14:. A head-cutting machine made up of a driving mechanism; a feedingmechanism; mechanism for adjusting said feeding mechanism to place thecenter of the head in the axis of the clamp-shaft when the clampingmechanism is thrown into operation; an automatic rotary clampingmechanism; mechanism for throwing the cutters into contact with thestock when itis clamped and rotated; and said cutters.

In testimony whereof I aiiix my signature in the presence of twosubscribing witnesses.

WILLIAM E. NICHOLS.

Witnesses:

FRANK B. SPALTER, HENRY S. ALLEN.

IOS

